For those who don't know... I'm pretty sure i've seen strange looking pets held by venos such as a White Bunny, a Frog, a Bear etc. In PWI those are called rare pets. Here are some detalies about them:

Sorry for the alignment but the text editor on this site is really bad....

NOTICE: if u gather a number of eggs of each kind you can take it to Mr. Zoologist to turn it to a Baby animal that can be used by all characters: For FROGGY: 8 eggs ; For DOD BEAR: 2 normal eggs and 2 shoudo cub; and for the rest 5 eggs.